ai-synthesis-ai011

AI Synthesis AI011 Analog VCO

Classic 3340-based analog oscillator with four simultaneous waveforms

8 HP Eurorack module

The AI011 Analog VCO is a robust and stable analog Eurorack oscillator built around the legendary CEM/Curtis 3340 IC, providing rich, classic analog tones. It outputs buffered Triangle, Square, and Ramp waveforms simultaneously, plus a dedicated triangle-to-sine wave shaper for a smooth sine output. Its stable pitch tracking and multiple waveform outputs make it a versatile voice core for leads, basses, drones, and complex modulation sources.

Features

  • CEM/Curtis 3340 VCO IC for stable, warm analog oscillator core
  • Four simultaneous waveform outputs: Triangle, Square, Ramp, and Sine
  • Triangle-to-sine wave shaper circuit for smooth sine output
  • Buffered waveform outputs
  • Coarse and Fine Tune controls for precise pitch setting
  • 1V/Oct CV input for standard keyboard and sequencer tracking
  • FM input with dedicated FM Amount attenuator knob
  • Pulse Width control with Pulse Width CV input for dynamic square wave shaping
  • Hard Sync input for classic sync timbres
  • Sine Shaper control for adjusting sine wave character
  • Mode Select control
  • Available as fully built, DIY kit, and PCB/Panel format

Controls & Jacks (16)

  • Coarse Tune— Coarse frequency tuning control
  • Fine Tune— Fine frequency tuning control
  • Hard Sync Input— Pulse width modulation control for square wave
  • Pulse Width— Frequency modulation input
  • FM Amount— Frequency modulation amount/depth control
  • V/Oct Input— Pitch control via V/Oct standard
  • Pulse Width CV— Pulse width modulation CV input
  • Triangle Output 1— Buffered triangle wave output
  • Sine Shaper— Buffered square wave output
  • Hard Sync Input— Hard sync input for syncing to external oscillator
  • Triangle Output 2— Buffered ramp wave output
  • Square Output— Sine wave output from triangle to sine shaper
  • Ramp Output— Mode selection switch
  • Mode Select— Mode selection switch
  • FM Input— Frequency modulation input
  • Sine Output— Sine wave output from triangle to sine shaper

How-To Guides

  • Warm Analog Drone
  • Punchy Analog Bass
  • PWM String Pad
  • Hard Sync Harmonic Sweep
  • FM Bell and Clang
  • Detuned Unison Lead
  • Audio-Rate LFO Modulation Source
  • Self-FM Growl Bass

Explore the interactive AI011 Analog VCO panel on BleepDex — tap any control to learn what it does.

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